diff --git a/README.md b/README.md
index 51a38c8..b61f4c0 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 [![Build][image-build]][link-build]
 [![Windows][image-verify-windows]][link-verify-windows]
 [![macOS][image-verify-macos]][link-verify-macos]
-[![Linux][image-verify-linux]][link-verify-linux]
+[![Ubuntu][image-verify-ubuntu]][link-verify-ubuntu]
+[![Ubuntu 16.04][image-verify-ubuntu1604]][link-verify-ubuntu1604]
 [![Release][image-release]][link-release]
 [![License][image-license]][link-license]
 
@@ -89,10 +90,12 @@ See [CHANGELOG.md](CHANGELOG.md).
 [link-build]: https://github.com/shimataro/ssh-key-action
 [image-verify-windows]: https://github.com/shimataro/ssh-key-action/workflows/Windows/badge.svg
 [image-verify-macos]: https://github.com/shimataro/ssh-key-action/workflows/macOS/badge.svg
-[image-verify-linux]: https://github.com/shimataro/ssh-key-action/workflows/Linux/badge.svg
+[image-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu/badge.svg
+[image-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu%2016.04/badge.svg
 [link-verify-windows]: https://github.com/shimataro/ssh-key-action
 [link-verify-macos]: https://github.com/shimataro/ssh-key-action
-[link-verify-linux]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action
 [image-release]: https://img.shields.io/github/release/shimataro/ssh-key-action.svg
 [link-release]: https://github.com/shimataro/ssh-key-action/releases
 [image-license]: https://img.shields.io/github/license/shimataro/ssh-key-action.svg